stream_context_get_default

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

stream_context_get_default — Retrieve the default stream context

Опис

stream_context_get_default(?array $options = null): resource

Returns the default stream context which is used whenever file operations (fopen(), file_get_contents(), etc...) are called without a context parameter. Options for the default context can optionally be specified with this function using the same syntax as stream_context_create().

Параметри

options: options must be an associative array of associative arrays in the format $arr['wrapper']['option'] = $value, or null.

Значення, що повертаються

A stream context resource.

Журнал змін

Версія	Опис
8.0.0	`options` is now nullable.

Приклади

Приклад #1 Using stream_context_get_default()

<?php
$default_opts = array(
  'http'=>array(
    'method'=>"GET",
    'header'=>"Accept-language: en\r\n" .
              "Cookie: foo=bar",
    'proxy'=>"tcp://10.54.1.39:8000"
  )
);

$alternate_opts = array(
  'http'=>array(
    'method'=>"POST",
    'header'=>"Content-type: application/x-www-form-urlencoded\r\n" .
              "Content-length: " . strlen("baz=bomb"),
    'content'=>"baz=bomb"
  )
);

$default = stream_context_get_default($default_opts);
$alternate = stream_context_create($alternate_opts);

/* Sends a regular GET request to proxy server at 10.54.1.39
 * For www.example.com using context options specified in $default_opts
 */
readfile('http://www.example.com');

/* Sends a POST request directly to www.example.com
 * Using context options specified in $alternate_opts
 */
readfile('http://www.example.com', false, $alternate);

?>

Прогляньте також

stream_context_create() - Створює контекст потока
stream_context_set_default() - Set the default stream context
Listing of supported wrappers with context options (Підтримувані протоколи та обгортки).

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